RADAR BASED MOTION DETECTOR MODULE Characteristic features

RADAR BASED MOTION
DETECTOR MODULE
4 016138 557022
 Innovative Radar operating principle:
high sensitivity on slightest movement
 Ideal for motion alarm unit: invisible
mounting, safe against vandalism
 Optimized PHEMT-Oscillator with low current
consumption, mono (single channel) operation
 Separate sending and receiving antenna for
maximum sensitivity
 Fulfils ETSI-standard, general CE-permission
 Very small outline dimensions
Typical areas of application
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Level measurement, sanitary applications
Distance and speed measurement
Alarm and safety applications
OEM applications in automotive
Description
CFriedrich, Dokument9
The Radar module has been developed to cater for
majority of the requirements which are meant for
door openers, alarm and safety systems, control of
machines, sanitary rooms and up to games and
sport devices. The module is suitable for a wide
variety of applications, in which movement or
presence has to be registered and based on this,
the switching process is to be affected.
Unlike the passive infra-red motion alarm unit,
which only registers object at a temperature
difference with respect to the background, the
radar module responds to all movements in the
direction of the sensor. With this, the movement
sensitivity is extremely high, even smallest
movements nearly up to the stand still state is
recognized, because of which the modules are
also very well suitable for presence alarm units.
Radar module works through many materials, e.g.
plastics, hence vandalism safe, hidden installation
is possible.
The module supplies an unamplified mixer signal,
which must treated in a subsequent amplifier,
before it can be evaluated by means of a
comparator or a micro-controller. The electronics
module as HF-sub assembly is meant for
assembling into customised projects.
Further application notes and circuit examples can
be obtained on request.
Technical data
Motion alarm Module
CON-RSM1650
Operating voltage VCC
4.75 ... 5.25 V
Supply current
30 ... 40 mA
Operating temperature
-20 ... +60 °C
Sending frequency
Standard:
24.000 ... 24.250 GHz
UK: 24.150 ... 24.250 GHz
F:24.075 ... 24.175 GHz
Output power
16 dBm
Temperature Drift
-1 MHz/°C
Antenna characteristics
Horizontal 80 ° (azimuth)
Vertical 32 ° (elevation)
Side lobe suppression
Horizontal 13 dB (azimuth)
Vertical 13 dB (elevation)
IF output voltage
(DC Offset)
-300 ... +300 mV
Signal level
category A (low):
263 ... 399 mV(P-P)
category B or E (medium):
400 ... 549 mV(P-P)
category C (high):
550 ... 8502 mV(P-P)
Dimensions
25,0 x 25,0 x 12,7 mm
Ordering number
CON-RSM1650
Rights reserved for change in technical data!
For further information, please
website: www.hygrosens.com
visit
our
Rights reserv ed f or change in technical data!
 Universal HF-module (K-Band Transceiver),
without NF-Signal amplifier
Released 08/2008
Characteristic features
HYGROSENS INSTRUMENTS GmbH Postf ach 1054
D-79839 Löf f ingen Tel: +49 7654 808969-0 Fax: +49 7654 808969-9
Ordering No. 50 23 70
CON-RSM1650
RADAR BASED MOTION
DETECTOR MODULE
Handling recommendations
The sensor is susceptible to ESD danger
due to wrong handling. However, the
regular precautions for CMOS circuits are
sufficient during handling of the component.
Touching the signal outputs should be avoided,
before the module is assembled on the circuit
board.
The use of a multimeter for resistance measurement between the connection pins can lead to
damage of the module.
The proximity of fluorescent lamps can lead to
incorrect triggering. Hence, the module should not
be installed in direct proximity of fluorescent lamps.
This effect can be suppressed by introducing a 100
Hz notch filter in the ensuing electronics.
Because of its type of construction, the module is
sensitive to sound impacts. Just mounting over the
pins is not sufficient, the module should also be
mechanically further secured.
1
Operating voltage 4.75 ... 5.25 V
2
Signal output
3
Ground
Antenna diagram
D-79839 Löf f ingen Tel: +49 7654 808969-0 Fax: +49 7654 808969-9
Function
HYGROSENS INSTRUMENTS GmbH Postf ach 1054
Pin
Rights reserv ed f or change in technical data!
The radar module comprises of a highly integrated
radar sensor with sending and receiving part as
well as a push-pull mixer. Careful circuit layout and
selection of suitable components guarantees the
fact that the module complies with the requirements of European ETSI standard and possesses
a generally valid CE permission.
Radar based motion alarm units work as per the
Doppler principle: the electromagnetic waves in the
microwave range are reflected from the object and
superimposed over a sending signal by a mixer in
the module. Therefore, the frequency of signal
originating at the mixer output is proportional to the
speed: 44 Hz corresponding to a movement speed
of approx. 1 km/h. The amplitude of the signal is
an outcome of the size of the object and its
distance to the sensor.
While PIR sensors react very insensitively to
movements in straight direction, the radar sensor
shows its highest sensitivity here. On the other
hand, radar sensors are more insensitive to
circular movements around the sensor, while the
PIR sensors clearly possesses the highest sensitivity here. Therefore, in modern safety related
applications, the PIR sensors and radar sensors
are effectively combined.
The signal voltage at output of the mixer is still
very low, in the maximum order of approx. 300 µV.
Therefore, a subsequent amplifier is required with
defined bandwidth (approx. 20 ... 900 Hz) which
brings the signal to a useful level, which can be
then further evaluated over a micro-controller.
Application circuits for this are available on
request, alternatively modules with integrated
amplifiers are also available.
Connection
Released 09/2008
Operation
CON-RSM1650
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